This circuit was found in a 1968 documentation. The circuit generates three rectangular signals from a 400 Hz sinusoidal input. The circuit is suitable for applications in power controls.
This circuit was obtained from an American 80's documentation. The balanced mixer can be shown in...
This circuit produces a square wave signal with the frequency determinated by R1 and C1. The upper limit...
In the figure we have the circuit of an amplifier for alternating signals with 10 times gain,...